Floyd Mayweather Jr. is launching what?

When we heard that Floyd Mayweather Jr. — undefeated boxing champion, father of four and a man who prefers to take his cat naps on stacks of cash — was launching a new product line, we expected something along the lines of a sportswear collaboration, or perhaps a brand of protein shakes.

We were wrong.

The 39-year-old revealed that his latest project is actually in the beauty sphere. So, we thought, maybe he's launching a men's skincare collection a la Rob Lowe or Ryan Seacrest?

It appears that Mayweather's true calling is more in line with Kylie Jenner's. That's to say, he's getting into the lipstick business. That's right, the boxing champ is becoming a makeup mogul with his new beauty brand, Bad Medina Cosmetics.

LAS VEGAS, NV - MAY 01: WBC/WBA welterweight champion Floyd Mayweather Jr. puts on the King Power WBC HUBLOT watch at HUBLOT and Floyd Mayweather Jr.: The perfect combination for the fight of the century at the MGM Grand Garden Arena on May 1, 2015 in Las Vegas, Nevada. (Photo by Gabe Ginsberg/Getty Images for HUBLOT)

LAS VEGAS, NV - APRIL 14: WBC/WBA welterweight champion Floyd Mayweather Jr. puts a towel over his head as he works out at the Mayweather Boxing Club on April 14, 2015 in Las Vegas, Nevada. Mayweather will face WBO welterweight champion Manny Pacquiao in a unification bout on May 2, 2015 in Las Vegas. (Photo by Ethan Miller/Getty Images)

LAS VEGAS, NV - SEPTEMBER 02: Boxer Floyd Mayweather Jr. arrives for a workout at the Mayweather Boxing Club on September 2, 2014 in Las Vegas, Nevada. Mayweather Jr. will defend his WBC/WBA welterweight titles against Marcos Maidana on September 13 in Las Vegas. (Photo by Eric Jamison/Getty Images)

MIAMI, FL - JUNE 12: Boxer Floyd Mayweather Jr. attends Game Four of the 2014 NBA Finals between the Miami Heat and the San Antonio Spurs at American Airlines Arena on June 12, 2014 in Miami, Florida. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Chris Trotman/Getty Images)

LAS VEGAS, NV - MAY 02: WBC welterweight champion Floyd Mayweather Jr. poses on the scale during his official weigh-in at the MGM Grand Garden Arena on May 2, 2014 in Las Vegas, Nevada. Mayweather will meet WBA champion Marcos Maidana in a WBC/WBA unification fight in Las Vegas on May 3. (Photo by Ethan Miller/Getty Images)

"I want to formally introduce you to the 'Bad Medina Cosmetics' line," wrote the boxer, who is currently in Rio de Janeiro to support Team USA, in a series of tweets on Monday afternoon. "This is a project that we've worked on tirelessly and although it has been long awaited on by many, we wanted to make sure we deliver products that are trial tested and far surpass the top of the line standards you are looking for."

On the site, Medina writes that the products ($17-$25) — including all things lips (lipsticks, paints, liners, glosses) as well as shadows and blushes — have "Baddie Diamonds" added "to create a flawless finish for face and lip and help bring out the radiance and luminosity of your inner goddess."

Mayweather concludes: "Ladies treat yourself to something vibrant and different from the rest ... this is luxury at its best!"

We may have doubts about his beauty expertise, but when it comes to luxury, we trust that Mayweather knows what he's talking about.